Abstract:
During this semester, we wish to perform proof of concept testing of
a new observational technique called Stabilized-sPeckle Integral Field
Spectroscopy (SPIFS). SPIFS will enable, under certain observational
conditions and constraints, low-to-modest Strehl diffraction-limited
imaging spectroscopy from large ground-based telescopes in the optical
bandpass (i.e. V, R, and I bands). SPIFS is capable of exploring
important scientific niches which are not currently available using
existing high angular resolution techniques such as adaptive optics or
speckle imaging. At the same time, the SPIFS instrument concept is
relatively straightforward and feasible using existing, relatively-
inexpensive technology. The finished instrument will be able to achieve
better than 15 mas resolution on current telescopes. To test the
technique, we have designed a testbed instrument containing all the
components necessary to prove the concept without the integral field
unit. The 2.1 meter telescope at Kitt Peak is ideal for
characterization and our proposal calls for two observing runs separated
by a few weeks. On the first run, we would observe and characterize
speckle patterns in real time with our camera and optics. On the second
run, we would use the speckle data from the first run to condition the
system response and achieve loop closure where we actually stabilize
bright speckles onto a science camera.